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In this image taken from video obtained from Bambuser, which has been authenticated based on its contents and other AP reporting, Syrians help an inured man into a vehicle after an airstrike hit Douma City, Syria on Thursday, Jan. 3, 2013. Airstrikes continued across Syria on Thursday as Syrian President Bashar Assad's military stepped up its assault on areas that surround the nation's capital. (AP Photo/Bambuser via AP video)

In this image taken from video obtained from Bambuser, which has been authenticated based on its contents and other AP reporting, Syrians help an inured man into a vehicle after an airstrike hit Douma City, Syria on Thursday, Jan. 3, 2013. Airstrikes continued across Syria on Thursday as Syrian President Bashar Assad's military stepped up its assault on areas that surround the nation's capital. (AP Photo/Bambuser via AP video)